Portable device to determine particle asymmetry parameter
Abstract
Accurate characterization of the asymmetry parameter g is of crucial importance for many radiative transfer and climate models. Here, we present our portable light scattering (PLS) device which is designed for in situ, real-time, and contact-free measurements of the particles phase function with an integration time less than 1 second. With the PLS device, we have characterized carbonaceous aerosols, such as smoldering products from Alaskan peat, soot from a kerosene lamp and non-carbonaceous aerosols such as Arizona Road Dust. We found the g to be 0.664+/-0.002, 0.506+/-0.004, and 0.701+/-0.020 for those three kinds of particles, respectively. Compare to commercial nephelometers, our PLS device has reduced error in g due to angular truncation.
Cite
@article{arxiv.1902.02389,
title = {Portable device to determine particle asymmetry parameter},
author = {Yuli W. Heinson and Christopher M. Sorensen and Rajan K. Chakrabarty},
journal= {arXiv preprint arXiv:1902.02389},
year = {2019}
}
Comments
6 pages, 6 figures